| Isoetes sinensis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Lycophytes |
| Class: | Lycopodiopsida |
| Order: | Isoetales |
| Family: | Isoetaceae |
| Genus: | Isoetes |
| Species: | I. sinensis |
| Binomial name | |
| Isoetes sinensis T.C. Palmer | |
Isoetes sinensis, the narrow quillwort, [2] is a species of plant in the family Isoetaceae.
Isoetes sinensis is native to China and Korea. [3] [2] Its natural habitat is swamps. It is threatened by habitat loss. In China, this species is native to the areas of Anhui, Jiangsu, and Zhejiang.
Isoetes sinensis is recorded to be a critically endangered species due to industrial development and agricultural expansion. This species occupies freshwater environments and within terrestrial systems. [1] In order to help conserve this species, amplified fragment length polymorphisms (AFLPs) were used to research the genetic variation of it and the population structure of seven extant populations of the species. This investigation helped provide useful data for creating conservation strategies to help preserve the species. [4]
Isoetes, commonly known as the quillworts, is a genus of lycopod. It is the only living genus in the family Isoetaceae and order Isoetales. There are currently 192 recognized species, with a cosmopolitan distribution mostly in aquatic habitats but with the individual species often scarce to rare. Some botanists split the genus, separating two South American species into the genus Stylites, although molecular data place these species among other species of Isoetes, so that Stylites does not warrant taxonomic recognition. Species virtually identical to modern quillworts have existed since the Jurassic epoch, though the timing of the origin of modern Isoetes is subject to considerable uncertainty.
Species reintroduction is the deliberate release of a species into the wild, from captivity or other areas where the organism is capable of survival. The goal of species reintroduction is to establish a healthy, genetically diverse, self-sustaining population to an area where it has been extirpated, or to augment an existing population. Species that may be eligible for reintroduction are typically threatened or endangered in the wild. However, reintroduction of a species can also be for pest control; for example, wolves being reintroduced to a wild area to curb an overpopulation of deer. Because reintroduction may involve returning native species to localities where they had been extirpated, some prefer the term "reestablishment".
The Chinese alligator, also known as the Yangtze alligator, China alligator, or historically the muddy dragon, is a crocodilian endemic to China. It and the American alligator are the only living species in the genus Alligator of the family Alligatoridae. Dark gray or black in color with a fully armored body, the Chinese alligator grows to 1.5–2.1 metres (5–7 ft) in length and weighs 36–45 kilograms (80–100 lb) as an adult. It brumates in burrows in winter and is nocturnal in summer. Mating occurs in early summer, with females most commonly producing 20–30 eggs, which are smaller than those of any other crocodilian. The species is an opportunistic feeder, primarily eating fish and invertebrates. A vocal species, adults bellow during the mating season and young vocalize to communicate with their parents and other juveniles. Captive specimens have reached age 70, and wild specimens can live past 50.
The Chinese softshell turtle is a species of softshell turtle that is native to China and Taiwan, with records of escapees—some of which have established introduced populations—in a wide range of other Asian countries, as well as Spain, Brazil and Hawaii.
The Japanese rice fish, also known as the medaka, is a member of genus Oryzias (ricefish), the only genus in the subfamily Oryziinae. This small native of Japan is a denizen of rice paddies, marshes, ponds, slow-moving streams and tide pools. It is euryhaline, occurring in both brackish and freshwater. It became popular as an aquarium fish because of its hardiness and pleasant coloration: its coloration varies from creamy-white to yellowish in the wild to white, creamy-yellow, or orange in aquarium-bred individuals. Bright yellow, red or green transgenic populations, similar to GloFish, have also been developed, but are banned from sale in the EU. The medaka has been a popular pet since the 17th century in Japan. After fertilization, the female carries her eggs attached anterior to the anal fin for a period before depositing them on plants or similar things.
The Korean hare is a species of hare native to the Korean Peninsula and adjoining parts of northeastern China. The Korean hare inhabits diverse habitats within its range, from remote mountain forests to cultivated land. Fur colour varies slightly among individuals, but is generally some shade of liver brown.
Mauremys reevesii, commonly known as the Chinese pond turtle, the Chinese three-keeled pond turtle, or Reeves' turtle, is a species of turtle in the family Geoemydidae, a family which was formerly called Bataguridae. The species is native to East Asia.
The Chinese hare is a species of mammal in the family Leporidae. It is found in China, Taiwan and Vietnam.
The Yarkand hare is a species of mammal in the family Leporidae. It has soft, straight, sandy brown dorsal pelage which has grayish-black stripes, and completely white ventral pelage. Endemic to China, the Yarkand hare is restricted to the Tarim Basin in Southern Xinjiang, China. It is mainly nocturnal, and forages on grass and crops. The female produces two or three litters annually, each consisting of two to five young. It is rated as near threatened on the International Union for Conservation of Nature Red List of Endangered Species and by the Red List of China's Vertebrates. However, Chinese geneticists have stated the species is "endangered" due to limited habitat and its fragmentation, and over-hunting and poaching.
Isoetes ecuadoriensis is a species of plant in the family Isoetaceae. It is endemic to Ecuador. Its natural habitats are subtropical or tropical high-altitude grassland and alpine wetlands. It is threatened by habitat loss.
Isoetes taiwanensis is a species of plant in the family Isoetaceae. It is endemic to Taiwan, and the only species of quillwort there. As other quillworts, it is relatively small, with erect leaves 7–24 cm (2.8–9.4 in) long. It grows submersed in shallow ponds for most of the year. IUCN considers it critically endangered because of habitat loss.
Magnolia coriacea is a species of flowering plant in the family Magnoliaceae. It is native to China. There are no more than about 500 individuals remaining of this endangered species.
Isoetes engelmannii is a species of aquatic plant in the family Isoetaceae. It is referred to by the common names Engelmann's quillwort or Appalachian quillwort, and is the most widely distributed species of its genus in eastern North America. Its range extends from Ontario in the north, south to Florida and west Arkansas and Missouri. It can be found from April to October in temporary pools, bogs, marshes, stream edges, swamps and along wet roadsides.
Dongbaekdongsan is located in the unique ‘Gotjawal’ forest in the Jeju-do province, South Korea. The Gotjawal forest in Jeju Island is the only region among the world where the tropical northern limit plants and polar southern limit plants coexist. Also, 'Gotjawal' has abundant groundwater and excellent effects of heat-retaining and rehydration. 'Dongbaek' and 'dongsan' mean 'camellia' and 'hill' respectively in Korean.
Tor sinensis, the Chinese or Red mahseer is a species of mahseer native to the Mekong River. It is known with certainty only from Yunnan, China; reports from Cambodia, Laos, and Thailand require confirmation.
It is one of four currently valid species described from China, the others being Tor laterivittatus, Tor polylepis, and Tor yingjiangensis.
Isoetes tuckermanii, or Tuckerman's quillwort, is a tetraploid species of plant in the family Isoetaceae. It can be found in shallow water in Newfoundland, Nova Scotia, New Brunswick, and south through the New England states to Maryland. It bears 10 to 45 long bright green to yellow green leaves that are 4 to 25 centimeters long, usually erect, but sometimes recurved. The velum covers one fourth or less of the sporangium, which is usually unspotted, 5 millimeters long, and 3 millimeters wide. The white spherical megaspores are 400 to 650 micrometers in diameter, and bear rough-crested ridges that form a hexagonal honeycomb shape. The kidney shaped microspores are 24 to 33 micrometers long, bearing tubercles. It is very similar to I. macrospora, only reliably distinguishable by cytology or through careful megaspore measurement.
Isoetes heldreichii, or Pindus quillwort, is a species of lycopod. It is critically endangered. Some think it extinct as it was last seen in 1885.
Isoetes malinverniana, the Piedmont quillwort, is a species of quillwort. It is critically endangered.
Isoetes olympica, the Olympic quillwort, is a flowering plant in the family Isoetaceae. The IUCN has classified the species as critically endangered. It was named by Alexander Braun in 1867.
Shuanglianpi Wetland is a partially protected natural area in Yilan County in northern Taiwan. Situated 470 meters above sea-level, it contains a botanically rich, shallow lake, which, from the perspective of plant species density, is considered to be a wetland with global significance by the Forestry Bureau of Taiwan.
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